group
    source (-)
is
    $/basis.cm
    $/smlnj-lib.cm
    (* custom libs *)
    lib/file_extra.sml
    lib/string_extra.sml
    lib/list_extra.sml
    lib/vector_extra.sml
    lib/int_extra.sml
    lib/bit_extra.sml
    lib/math_extra.sml
    (* puzzle stuff *)
    lib/line_segment.sml